Custom DevTools are a powerful way to speed up development.

✅Toggle feature flags
✅Configure mocks
✅Change users
✅Simulate slowness
✅Force errors
✅Generate incoming traffic

Does your app have custom DevTools? What do they do?

Screenshots/videos welcome.

My demo:

I've helped many teams build custom devtools like this. They're a wonderful way to test edge cases. I even use these DevTools in Playwright/Cypress tests.

This is a preview of my @ReactRally talk.

I'm eager to see your custom DevTools so I can show off other ideas in the talk.

View original on X